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A construction company that installs drywall wanted to investigate how a person’s age affects how much...

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Basic Math

  1. A construction company that installs drywall wanted toinvestigate how a person’s age affects how much dry wall they caninstall in a week. On one hand, it would seem that the youngerworkers would be able to install more, but it seems that experiencewould also play a role. Two samples were taken.

    Ages 18-21 Ages 25-28
    (sheets / wk) (sheets / wk)
    88 104
    104 116
    96 96
    88 104
    112 108
    108 108
    84 116
    120 112
    92 120
    116 108

    a) Set up the null and alternative hypotheses to see if there is adifference in the average number of sheets of dry wall that aperson can install per week based on age.
    b) Check the conditions.
    c) Calculate the test statistic.
    d) Find the p-value.
    e) Using α = 0.05, state your conclusion in the context of theproblem.

Answer & Explanation Solved by verified expert
3.6 Ratings (309 Votes)
a Ho 1 2 0 Ha 12 0 b Normal approximation holds if the two sampled populations are similar and not too assymmetric c Sample 1 1 mean of    See Answer
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